Hood for car dumpers



Dec. 1, A F CASE ET AL HOOD FbR CAR DUMPERS Filed July 13, 1935 3Sheets-Sheet 2 iii: N

5 AvvsA/raes: ARTHUR F. CASE A4 cams Dec. 1, 1936 A. F. cAsE ET AL2,062,502 HOOD FOR OAR DUMPERS.

Filed July 13, 1935 3 Sheets-Sheet 5 Afraelvsvs Patented Dec. 1, 1936HOOD FOR CAR DUMPERS Arthur F. Case, Cleveland, and Joseph P. Doyle,Lakewood, Ohio, assignors to The Wellman Engineering Company, Cleveland,Ohio, a corporation of Ohio Application July 13, 1933, Serial No.680,216

32 Claims.

This invention relates to car dumpers of the type having a car receivingcradle which is turned to dump a car supported by the cradle and moreparticularly to hood means for a car dumper to retard and control theshifting of the material in the car and the discharge of the sametherefrom when the cradle is turned. I

As the tilting or dumping movement of the cradle of a car dumpercommences the material in the car being dumped starts to shift towardthe dumping side. This shifting movement of the material toward thedumping side of the car before the car reaches full dumping position isdisadvantageous in any type of dumper and it is especially so in dumpersusing car clamps of the type wherein the turning movement of the cradlemoves the car into engagement with the clamps.

Furthermore, the tilting or dumping movement of the cradle of a cardumper, particularly when there has been a shifting of the material inthe car being dumped during the early stages of the movement, acts tothrow the material at the far side and bottom of the car outwardly intothe discharge pan at a distance from the dumper tower or frame. Thisresults in considerable breakage 'of the material being dumped unlessthe outflow of the material from the car is retarded. This breakage isserious irrespective of the particular material being dumped, but it ismore serious when the material is coal.

Another cause of breakage of the material is the fact that the dumpingmovement of the cradle causes the contents of the car, especially if ithas shifted previously, to be discharged suddenly therefrom in a largevolume resulting in the material sliding down the discharge pan in agreat mass and at a substantial speed.

The principal object of the present invention is to provide improvedmeans in a car dumper for substantially reducing the amount of breakagein the material caused by the dumping movement of the cradle.

Another object of the invention is to provide means in a car dumper forsubstantially eliminating or reducing the shifting movement of thematerial in the car being diunped toward the dumping side of the carduring the early stages of the turning movement of the cradle.

Since it is customary in positioning a car upon the cradle of a cardumper to have a man ride the car onto the cradle and to manually setthe car brakes at the proper time, it is necessary that the means,specified above, be of such character as not to interfere with the carrider or to present a dangerous hazard for the rider when the cradle isin car receiving position.

Another important object of the invention isto' provide improved meansin a car dumper for re-, ducing the breakage of the'material during thedumping operation, which means is of such charactor as not to be unsafein that when the .cradle of the dumper is in car receiving position saidmeans will be automatically positioned so as not to interfere with orinjure a man riding a car onto the cradle.

Another object is to provide means in a car dumper, such as specifiedabove, wherebysubstantially all of the material being dumped must passinto the discharge pan of "the dumper adja-.

cent to the dumping point, that is, adjacent the dumping frame or towerand the pan girder.

Another object is to provide means in a car dumper, such as specifiedabove, that is capable of functioning with cars of .difierent height andlength. A further object is to provide means in a car dumper, aspreviously specified ,..which will adapt itself to the varying heightsofthe load of material in the car being dumped. v

A further and more specific object istopro'vide means in a car dumper,such as previously speci fled, wherein said means will be positivelyheld against movement during'the dumping operation, thus assuringefiiciencyand safety thereof in use. Another object is to provide in acar dumper means, such as previously specified, which willnot interferewith the operation or effectiveness of the car clamps. 1 I f Additionaland further objects and advantages will become apparent during thedetailed description of an embodiment of the invention now. about to bedescribed and'which, for purposes of illustration, is shown as appliedto a'car dumper of the lifting and tilting type, although, of course, itcould be applied to a car dumper of the tum-over type in which thecradle of the car dumper revolves about a fixed pivot and has novertical hoisting movement previous to its dumpng rotation, or to a cardumper of the rolling ype in which the car is clamped in a barrelup aninclined track o a point where the contents of-the car are to shapedcradle that is rolled be dumped, or to a car dumper of any'other type.

Referring to the accompanying drawings illustrating such embodiment:

1 is a side elevational view of a car dumper of the lifting and:ti1tingtype, the cradle being.

59Wll in our receiving position in full lines and stood in the art;

Fig. 2 is a fragmentary rear elevational view of the cradleof the cardumper shown in Fig. 1 with the hoods in the raised or inoperativeposition, such as they assume when the cradle is in car receivingposition; i

Fig. 3 is a fragmentary top plan view of the cradle of the dumper withthe hoods shown in the operative or car covering position, the outlineof the car, as well as one of the carclamps of the cradle being shown indash and dot lines;

Fig. 4 is an enlarged view partly in side elevation and partly insection of the cradle of the dumper with the embodiment of the inventionillustrated thereon in full lines when the cradle is in car receivingpositionand in dash and dot lines before the cradle reaches carreceiving position and the car is empty; 7

Fig. 5 is a fragmentary view of the cradle shown in Fig. 4 andillustrates the position of the parts when the cradle has been turnedduring the dumping operation;

. Fig. 6 is an enlarged fragmentary detailed view showing the positionof the retaining pawl for the sliding frame of the hoodwhen the cradleis in car receiving position;

Fig. 7 is a view similar to Fig. 6, but illustrates the positionsof' theparts shown in Fig. 6 after the cradle has turned approximately 90during the dumping operation;

Fig. 8 is a fragmentary elevational view taken from the right-hand sideof Fig. 6, and

Fig. 9is an enlarged top plan view of the portion of the dumper enclosedindotted circle A of Fig. 3, certain parts of the dumper being brokenaway to more clearly show underlying parts thereof.

Referring to the accompanying drawings the car dumper is shown ascomprising a tower l0 formed of suitable structural members and having avertically movable tiltable cradle l I arranged thereinand slidablealong suitable vertical guides, the vertical movement of the cradle inthe tower being effected by cables or ropes connected to the cradle andto suitable drums andpassing around sheaves located at the top of thecradle, as is well understood in the art. The cradle II is provided witha platen I2 having tracks thereon to receive a car l3,such platenpreferably being shiftable laterally by suitable means to cause the carto be moved over beneath the car clamps on the dumping side and toengage the bumper at such side as the cradle starts to turn and torestore the platen to center position at the end of the return movementof thecradle after the dumping operation.

The cradle l I is arranged to be first hoisted vertically to the desireddumping point and then to be rotated about a horizontal axis extendinglongitudinally of the cradle so that the material in the car on thecradle will be discharged from the car over the side or dumping edgethereof. The point where the'vertical hoisting of the cradle terminatesand its dumping rotation commences is'ordinarily adjustable to suitdifferent conditions. while the rotation of the cradle is accomplishedby the engagement of pivot pins carried by the cradle with suitablehooks arranged on avertically adjustable girder movably supported andguided by the framework of the tower. The means for tilting the cradleand .18 a justable girder referred to have not been illustrated herein,since per se they form no part of the present invention and are wellunderstood in the art, it being deemed suhicient to show the cradle andcar in the tilted dumping position by means of dot and dash lines (seeFig. 1).

A portion of a discharge pan or bin M is illustrated in Fig. 1 and it isinto such pan or bin that the contents of the car are dumped by thedumping movement of the cradle. The inner end of the pan is ordinarilyhingedly connected to the adjustable girder referred to above and is ofsuch width at its inner end as to be capable of receiving material fromthe longest car which can be handled by the dumper, while the outer endof the pan is ordinarily supported by ropes connected to such end andpassing over the top of the main framework of the tower.

Referring again to the cradle l I, it will be seen that certain of thevertically extending arms of the cradle at the dumping side thereof havesecured thereto bumper members [5 in which clamp hooks l6 are slidablymounted and which have downwardly extending portions ll adapted toengage the base of the dumper when the cradle is in its lowered positionto cause the clamp hooks to move upwardly away from the top edge of thecar after the latter has been dumped and the cradle is returned to carreceiving position. Car clamp beams l8 are pivotally connected at l9 tothe clamp hooks l6 by means of connecting straps 28 secured to the websof the beams and forming yokes straddling the hooks IS. The clamp beamsI8 are of such length as to extend transversely across the cradle andare held in elevated position when the cradle is lowered by means ofcables or ropes 2| connected to the members l5 and passing throughsuitable sheaves or other means on the clamp beams and other sheaveslocated at the top of the tower to counterweights (not shown) movablevertically of the tower in suitable guides. This arrangement of the carclamps is well understood in the art, as is also the manner in which theclamps function when the cradle is raised and tilted; that is, when thecradle moves vertically upwardly the hooks l6 stand stationary untilengaged by the top edge of the car at the dumping side thereof, afterwhich the hooks travel with the car and the clamp beams swing downwardlyacross the top of the car until the tilting or dumping movement of thecradle causes the counterweights connected to the cables 2| to bring theclamp beams firmly against the top of the car and hold the same in suchposition against the weight of the car and its contents during thedumping operation to thereby maintain the car in position upon thetracks of the cradle. It will be understood that there may be any numberof these car clamps as desired, although in the present embodiment foursuch clamps have been illustrated. It will further be understood thatthe means for raising the hooks l6 out of engagement with the top of thecar when the cradle is in its car receiving position may take variousforms and that the specific construction disclosed herein for thatpurpose is merely illustrative.

At the side of the cradle opposite to the dumping side thereof thecradle platform has secured thereto a longitudinally extending girderframe 22 formed of suitable structural members. Extending upwardly fromthe girder frame 22 are standards 23, there being four of thesestandards shown in the present embodiment (see Fig. 2) and each standardbeing formed of oppositely facing channels 23o interconnected by a plate23b (see Fig. 9) on the inward or cradle side of the standards. It willbe understood that the standards 23 are suitably connected at theirlower ends to the girder frame 22 by means of angles, gussets and likestructural members commonly used for such purpose.

The hood for the car dumper comprises a hood frame which is verticallyslidable on the standards 23 and is formed of vertically extendingchannels to the bases of which are secured straps 25 extending to therear side of the cradle and provided at their ends with laterally turnedportions 25a lying adjacent to and back of the rear flange of thechannels 23a. The channels 24 also have secured thereto plates 25b whichextend along the front side of the plates 23b of the standards. Thesliding frame of the hood is, in the present embodiment, formed in threeseparate sections with the two outer sections having channels 24 lyingadjacent to the two end standards 23 and channels 24 lying adjacent tothe two intermediate standards 23. The intermediate section of thesliding frame has its channels 24 lying adjacent to the two intermediatestandards 23, it being noted that all of the channels 24 are held forvertical movement on the standards by means of the laterally turnedportions 25a and the plates 25b.

The channels 24 of each frame section are connected at their lower endsby downwardly facing channels 26 extending longitudinally of the framesection and intermediate their ends by downwardly facing channels 21also extending longitudinally of the section. The channels 26 and 21 ofeach section are connected intermediate their ends by verticallyextending angle bars 28 secured thereto and projecting above thechannels 21. The sliding frame sections are further braced andreenforced by brace rods, wires or other suitable means, indicatedgenerally at 29, as is well understood in the art.

The sliding frame sections are counterbalanced in their movements on thestandards 23 by means of counterweights 30 mounted in suitable guides onthe rear of the tower or frame in of the dumper and connected to ropes3| passing over suitable sheaves and connected at their opposite ends tomeans carried by the sliding frame sections and later to be referred tomore in detail, it being noted that there are two counterweightsconnected to each section of the sliding frame.

The sliding frame carries the hoods proper which are pivotally supportedupon the channels 2Tof the frame sections. The channels 21 are providedon their upper side with brackets 32 between which brackets extendstructural members 33 that are pivotally mounted upon pins 34 carried bythe brackets 32 and extending through the members 33. The members 33extend transversely of the cradle toward the dumping side and alsorearwardly of the cradle beyond the channels 21. The two end sections ofthe sliding frame have four of the members 33 pivotally con nectedthereto, while the intermediate section of the frame has six of thesemembers pivotally connected thereto for a reason later to becomeapparent.

The members 33 together with plates 35 secured thereto form the hoodproper for the cradle, it being noted that every two adjacent members 33carry a plate 35 and that the two end sections of the frame each havetwo swinging hoods thereon, while the middle section of the frame isprovided with three swinging hoods making in all a total of sevenswinging hoods. forming the frame in sections and mounting thereonseparate swinging hoods is toenable the construction to adapt itself tocars of different lengths, as well as to adapt itself to the varyingheights to which the car may be loaded with the material, since thehoods engage the material after the cradle leaves its car receivingposition.

The under side of the plates 35 may be covered with rubber 35a or othernon-metallic material. It will be noted by reference to Figs. 1, 4 and 5that the members 33 and the plates 35 extend transversely of the cradletoward the dumping side thereof a distance such as toleave a restrictedopening or throat at the top side of the car adjacent th dumping side ofthe cradle.-

The rear ends of the members 33 have pivotally connected thereto forks36 carried by rods 31 which in turn are connected at their'lower ends tochains or other suitable flexible means 38. anchored to the girder frame22, as indicated at 39. The members 33 are also providedwith downwardlyextending portions 40 carrying at their lower ends pivotally mountedsteps 41 which cooperate with stop lugs carried by, the channels 24 ofthe sliding frames for a purpose later to be explained.

The channels 24 of the sliding frame are provided adjacent their lowerends with suitable bearing bosses 43 (see particularly Figs. 6 .to 9,inclusive) in which are rotatably mounted shafts 44, such shafts havingone end extending through and beyond the bosses 43 and their oppositeends rotatably mounted in spaced apart parallelangle plates 45 securedto the upper side of the channels 26 and extending rearwardly beyondsaid channels. The first mentioned ends of the shafts 44 have fixedthereto pawls 46 adapted to cooperate with vertically extending racks 41secured to the plates 23b of. the standards 23 and provided with arms46a to which are connected one end of tension springs 48, the other endsof which are connected to pins or other means 49 carried by the channels24. The shafts 44 between the angle plates 45 have fixed thereto hubs 5|from which extend upwardly rods or plates 52. Links 53 are pivoted attheir lower ends between the angle bars 45 rearwardly of the channels26, while their upper ends are connected to the ropes 3| that extend tothe counterweights for the hood. The links 53 adjustably carry,intermediate their ends, rods 54 that extend toward the dumping side ofthe cradle when the cradle is in the vertical position.

The angle .bars 28 of the sliding frame sections, as previouslymentioned, extend above the channels 2'! and these upwardly extendingportions of the angle bars 28 have secured thereto the rear ends ofbowed plate members 55 which extend in a direction transversely of thecradle and toward the dumping side thereof. 1

Referring to Figs. 1 and 4, wherein the cradle.

and the hood therefor are shown in full. lines when the cradle is in carreceiving position, it will be noted that the clamp hooks [6 areelevated above the top edge of the car l5 and that the sliding framesections of the hood are held in a raised position such that the members55 are above the top edge of the car. In this connection it should benoted that the counterweights 3!) connected to the sliding frame of thehood engage fixed stops 56 just prior to the cradle reaching itscarreceiving positionjwith the result that the further downward movementof the cradle effects a relative upward move- The purpose of ment of thesliding frame of the hood and thus moves the members 55 sufiicientlyabove the top edge of the car, not only to clear such edge, but to allowcars of varying height to enter the cradle. It will also be noted thatthe pivoted hoods proper are swung upwardly about the pivotal connectionof the members 32 with the channels 21 of the sliding frame sections andthe manner in which such upward swinging movement of the hoods isaccomplished will now be explained.

As previously stated, the rear ends of the members 33 are connected tothe rods and chains 37, 38, the latter of which are anchored at theirlower ends to the girder frame 22 carried by the cradle. When theco'unterweights 35 engage the stops 56 and the cradle continues itsdownward movement to car receiving position there is, as previouslystated, a relative upward movement of the sliding frame sections of thehood. Since the rear ends of the members 33 are connected to the rods 31it will be apparent that the chains 38 anchored to the girder frame 22will pull downwardly upon the rods with the result that the members 33carrying the plates 35 of the hoods proper will be swung about theirpivots to the full line position shown in Figs. 1 and 4.

Assuming the car l3, shown in Figs. 1 and 4, to be loaded with materialto be dumped, and that the vertical hoisting movement of the cradle hasstarted, it will be seen that the clamp hooks l6 and the members 55 ofthe hood remain stationary relative to the cradle until the top edge ofthe car engages the same, after which the hooks and the members travelvertically upwardly with the car and cradle. During the time that themembers 55 and, of course, the sliding frame sections have remainedrelatively station ary with respect to' the cradle as it commences totravel vertically upwardly, the channels 24 of the frame sectionswillhave'become positioned relative to the standards 23, so that the pawls45 carried by the channels 24 are in a position to cooperate with thevertically extending racks 47 on the standards 23. When the cradlereaches the dumping point and commences its turning movement, the platenIE will shift toward the dumping side of the cradle and bring the sideof the car into engagement with the bumpers l5 and position the top edgeof the car fully under the hooks l6.- The turning movement of the caralso causes the car clamp beams l8 to swing across the car and to engagethe top edge thereof opposite to the dumping edge, it being noted thatclearance is provided between certain of the swinging hood members toaccommodate the clamp beams, one of such beams being indicated in dashand dot lines between the two left-hand swinging hoods in Fig. 3. As iswell understood in the art, the rope 2| and the counterweight to whichit is connected act to more tightly maintain the clamp beam inengagement with the top edge of the car the further 'over the cradle istilted. p

During the initial upward movement of the cradle the swinging hoods arepermitted to swing downwardly by gravity and thereafter they bear uponthe material in the car with the result that the hoods restrain theshifting movement of the -material toward the dumping side until thecradle has nearly reached full dumping position.

The tilting movement of the cradle also causes the ropes 3| to swing thelinks 53 from their vertical position to an angular position withrespect to the standards 23, as shown in Figs. 5 and 7.

This movement of the links 53 withdraws the rods 54 from engagement withthe rods or plates 52, whereupon the tension springs 48 are free torotate the pawls 46 and shafts 44 to bring the pawls into engagementwith the racks 41 and thus positively lock the sliding frame againstoutward movement relative to the standards 23 under the Weight of thematerial in the car. The turning movement of the cradle also causes thecenter of gravity of the pivoted stops 4| to shift so that said stopsswing from a vertical position inwardly towardthe stop lugs 42 untiltheir lower ends engage therewith at which time the pivoted hoods properare positively held against swinging outwardly away from the car by theweight of the material in the car acting against the same.

When the cradle has turned to the full dumping positiomthe dot and dashshowing in Fig. 1, it will be noted that all of the material in the carmust pass outwardly thereof between the ends of the hoods and thedumping edge of the car and that if the turning movement of the cradletends to throw the material forcibly outwardly thereof the hoods willretard its movement and cause a gradual exit thereof from the carthereby' reducing the amount of breakage incident to the dumpingoperation.

After the car has been dumped and the cradle returns to averticalposition in the frame or tower to be lowered therein, it will be seenthat the links 53 will return to a substantially vertical position, suchas shown in Figs. 6, 8 and 9 and that the rods 54' carried thereby willengage the rods or plates 52 to rock the shafts 44 and the pawls 46against the action ofthe springs 48 and thus release the pawls fromtheir engagement with the racks 41. The return movement of the cradlewill also cause the pivoted stops 4| to swing away from their engagementwith the stop lugs 42 and assume a' substantially vertical position.After the car has been dumped and is empty the pivoted hoods may onlyswing downwardly across the car to a point where they engage with themembers 55, as shown in dash and dot lines in Fig. 4, thus obviating thedanger of the outer ends of the hood swinging into the interior of thecar.

As previously stated, when the cradle has reached its car receivingposition after the dumping operation, the clamp hooks IE will be raisedout of engagement with the top edge of the car as will also the members55, while the hoods will swing upwardly a substantial distance above thetop of the car. The empty car may now be removed and a new carpositioned upon the cradle, it being noted that the upwardly swung hoodsprovide'sufficient clearance for a car rider to accompany the loaded caronto the cradle in order to apply the brakes at the proper time tocorrectly position the same thereon.

It will also be noted that during the dumping or turning movement of thecradle the sliding frame sections are positively locked against out-Although a preferred embodiment of the invention has been illustratedand described herein, it should be understood that the invention issusceptible of various modifications and adaptations within .the scopeof the appended claims.

Having thus described our invention, we claim:

1. In a car dumper, a car receiving cradle adapted to be turned to dumpa car thereon, a hood extending transversely of the cradle toward thedumping side thereof and adapted to bear upon the material in the car,means pivotally connecting said hood to said cradle, and meansassociated with said cradle and said hood for automatically swingingsaid hood upwardly as said cradle reaches car receiving position. i

'2. In acar dumper, a car receiving cradle adapted to be turned to dumpa car thereon, a hood extending transversely of the cradle toward thedumping side thereof and adapted-to bear upon the material in the car,means pivotally connecting said hood to said cradle, means formaintaining said hood against outward swinging movement during theturning of said cradle to car dumping position, and means associatedwith said cradle and said hood for automatically swinging said hoodupwardly as said cradle reaches car receiving position.

3. In a car dumper, a car receiving cradle adapted to be turned todumping position, car

clamps adapted to clamp a car on said cradle during the dumpingoperation, pivoted means associated with said cradle for slidingmovement relative thereto and extending transversely thereof toward thedumping side and adapted to partially cover a car on said cradle, andmeans for maintaining said first named means against outward swingingmovement during the dumping operation.

4.'In a car dumper, a car receiving cradle adapted to be turned to cardumping position; car clamps adapted to clamp a car on said cradleduring the dumping operation, pivoted meansassociated with said cradlefor sliding movement relative thereto and extending transversely thereoftoward the dumping side and adapted to partially cover a car on saidcradle, and'means associated with said first named means and said cradlefor maintaining said first named means'against outward sliding movementrelative to said cradle, saidsecond named means being automaticallyrendered effective by the turning of the cradle to car dumping position.

5. In a car dumper, a car receiving cradle adapted to be turned to cardumping position, pivoted means associated with said cradle for slidingmovement relative thereto and extending transversely thereof toward thedumping side and adapted to partially cover a car on said cradle, meansfor maintaining said first-named means against outward swingingmovement, and means associated with said first-named means and saidcradle for maintaining said first-named means against outward slidingmovement relative to said cradle,'said last two named means beingeffective during the turning of the cradle to car dumping position.

6. In a car dumper, a car receiving cradle adapted to be turned to cardumping position,

- pivoted means associated with said cradle for sliding movementrelative thereto and extending transversely thereof toward the dumpingside and adapted to partially cover a car on said cradle,

means for maintaining said pivoted means against outward swingingmovement, means for maintaining said pivoted means against outwardsliding movement relative to said cradle, said last two named meansbeing effective during the turning of the cradle to car dumpingposition, and means for automatically swinging said pivoted meansupwardly as said cradle reaches car receiving position.

'7. In a car dumper, a car receiving cradle adapted to be turned tocardumping position, a frame mounted on and extending longitudinally ofsaid cradle for vertical movement relative thereto, and a. hoodpivotally connected to said frame and extending transversely of thecradle toward the dumping side thereof.

8. In a car dumper, a car receiving cradle adapted to be turned to cardumping position, a frame comprising a plurality of sectionsindependently mounted on said cradle for vertical movement relativethereto, and hoods pivotally connected to said sections and extendingtransversely of the cradle toward the dumping side thereof.

9. In a car dumper, a car receiving cradle adapted to be turned to cardumping position, a frame mounted on said cradle for vertical movementrelative thereto, a hood pivotally connected to said frame and extendingtransversely of the cradle toward the dumping side thereof, and meansassociated with said frame and said hood for maintaining said hoodagainst outward swinging movement during the turning of said cradle tocar dump ing position.

10. In a car dumper, a car receiving cradle adapted to be turned to cardumping position, a frame mounted on said cradle for vertical movementrelative thereto, a hood pivotally connected to said frame and extendingtransversely of the cradle toward the dumping side thereof, a stop lugcarried by said frame, and a pivoted stop carried by said hood andcooperating with said lug to maintain said hood against outward swingingmovement during the turning of said cradle tocar dumping position.

11. In a car dumper, a car receiving cradle adapted to be turned to cardumping position, a frame mounted on said cradle for vertical movementrelative thereto, a hood pivotally connected to said frame and extendingtransversely of the cradle toward the dumping side thereof, and

.turning of said cradle to car dumping position.

12. In a car dumper, a car receiving cradle adapted to be turned to cardumping position, vertical standards carried by said cradle opposite tothe dumping side thereof, a frame mounted for movement along saidstandards, a hood pivotally connected to said frame and extendingtransversely of the cradle toward the dumping side thereof, rackscarried by said standards, pawls carried by said frame, means for urgingsaid pawls into engagement with said racks, and means for rendering saidlast-mentioned means ineffective except during the turning of saidcradle to car dumping position.

13. In a car dumper, a car receiving cradle adapted to be turned to cardumping position, a frame mounted on said cradle for vertical movementrelative thereto, a hood pivotally connected to said frame and extendingtransversely of the cradle toward the dumping side thereof, means forcausing upward movement of said frame relative to the. cradle, and meansfor causing upward swinging movement of said hood relative to saidframe, both of said means being automatically sition.

I 14. In a car dumper, a car receiving cradle adapted to be raised andturned to car dumping position, a frame mounted on said cradle forvertical movement relative thereto, means for causing a vertical upwardmovement of said frame relative to said cradle prior to said cradlereaching car receiving position, a hood pivotally connected to saidframe and extending transversely of the cradle toward the dumping sidethereof, and means interconnecting said hood and said cradle andeffective during said upward movement of said frame to swing said hoodupwardly.

15. In a car dumper, a car receiving cradle adapted to be turned to cardumping position, car clamps carried by said cradle and effective duringthe turning of said cradle to clamp a car thereon, and a plurality ofpivoted hoods mounted on said cradle and extending transversely thereoftoward the dumping side, certain of said hoods being spaced apart toaccommodate said clamps when in car clamping position.

16. In a car dumper, a car receiving cradle adapted to be turned to cardumping position, a frame carried by said cradle and movable verticallywith respect thereto, said frame being provided with members extendinglaterally therefrom and toward the dumping side of the cradle andadapted to engage the top edge of a car thereon, and a pivoted hoodmounted on said frame and extending toward the dumping side of thecradle.

17. In a car dumper, a car receiving cradle adapted to be turned to cardumping position, a frame carried by said cradle and movable verticallywith respect thereto, said frame being provided with members extendinglaterally therefrom and toward the dumping side of the cradle andadapted to engage the top edge of a car thereon'when the cradle leavescar receiving position, and a pivoted hood mounted on said frame andextending toward the dumping side of the cradle and adapted when thecradle is in other than car receiving position either to bear upon thematerial in the car when the latter is fully loaded or to bear upon saidmembers when the car is empty or not fully loaded.

18. In a car dumper, a car receiving cradle adapted to be turned to cardumping position, vertical standards carried by said cradle opposite tothe dumping side thereof, a frame mounted for movement along saidstandards, a hood pivotally connected to said frame and extendingtransversely of the cradle toward the dumping side thereof, cooperatingracks and pawls carried by said frame and standards, means for urgingsaid pawls into engagement with said racks, and means for rendering saidlast mentioned means ineffective except during the turning movement ofsaid cradle to car dumping position.

19. In a ear dumper, a car receiving cradle adapted to be turned to cardumping position, a frame mounted on said cradle for vertical movementrelative thereto, a hood pivotally connected to said frame and extendingtransversely of the cradle toward the dumping side thereof, means forcausing upward movement of said frame relative to the cradle, means forcausing upward swinging movement of said hood relative to said frame,both of said means being automatically effective as said cradle reachescar receiving position, and automatic means maintaining said frameagainst outward movement during the turning of said cradle to cardumping position.

In a car dumper, a car receiving cradle adapted to be turned to cardumping position, a

frame mounted on said cradle for vertical moveadapted to be turned tocar dumping position, a

frame mounted on said cradle for vertical movement relative thereto, ahood pivotally connected to said frame and extending transversely of thecradle toward the dumping side thereof, means for causing upwardmovement of said frame relative to said cradle, means for causing upwardswinging movement of said hood relative to said frame, both of saidmeans being automatically effective as said cradle reaches car receivingposition, means for maintaining said frame against outward movementrelative to said cradle, and means for maintaining said hood againstoutward swinging movement relative to said frame, both of said last twomeans being automatically effective during the turning of said cradle tocar dumping position.

22. In a car dumper, a car receiving cradle adapted to be turned to cardumping position, a frame comprising a plurality of sectionsindependently mounted on said cradle for vertical movement relativethereto, hoods pivotally connected to said sections and extendingtransversely of the cradle toward the dumping side thereof, and meansfor independently and automatically maintaining said frame sectionsagainst outward movement during the turning of said cradle to cardumping position.

23. In a car dumper, a car receiving cradle adapted to be turned to cardumping position, a frame comprising a plurality of sectionsindependently mounted on said cradle for vertical movement relativethereto, hoods pivotally con nected to said sections and extendingtransversely of the cradle toward the dumping side thereof, and meansfor automatically and independently maintaining said hoods againstoutward swinging movement during the turning of said cradle to cardumping position.

24. In a car dumper, a car receiving cradle adapted to be turned to cardumping position, a frame comprising a plurality of sectionsindependently mounted on said cradle for vertical movement relativethereto, hoods pivotally connected to said sections and extendingtransversely of the cradle toward the dumping side thereof, means forautomatically and independently maintaining said frame sections againstoutward movement, and means for automatically and independentlymaintaining said hoods against outward swinging movement, both of saidmeans being effective during the turning of said cradle to car dumpingposition.

25. In a car dumper, a car receiving cradle adapted to be turned to cardumping position, a frame comprising a plurality of sectionsindependently mounted on said cradle for vertical movement relativethereto, hoods pivotally connected to said sections and extendingtransverseof, means for causing independent upward movement of saidframe sections relative to the cradle, and means for causing independentupward swinging movement of said hoods relative to said frame sections,both of said means being automatically effective as said cradle reachescar receiving position.

26. In a car dumper, a car receiving cradle adapted to be turned to cardumping position, a frame comprising a plurality of sectionsindependently mounted on said cradle for vertical movement relativethereto, hoods pivotally connected to said sections and extendingtransversely of the cradle toward the dumping side thereof, means forcausing independent upward movement of said frame sections relative tothe cradle, means for causing independent upward swinging movement ofsaid hoods relative to said frame sections, both of said means beingautomatically effective as said cradle reaches car receiving position,means for independently maintaining said frame sections against outwardmovement, and means forindependently maintaining said hoods againstoutward swinging movement, both of said last two means beingautomatically effective during the turning of said cradle to car dumpingposition.

27. In a car dumper, a car receiving cradle adapted to be turned todumping position, car clamping means, pivoted means associated with saidcradle for sliding movement relative thereto and extending transverselythereof toward the dumping side and adapted to overlie the car on saidcradle and form a cover therefor, and means for automatically swingingsaid pivoted means upwardly relative to the car as said cradleapproaches car receiving position.

28. In a car dumper, a car receiving cradle adapted to be turned todumping position, car clamping means, pivoted means associated with saidcradle for sliding movement relative thereto and extending transverselythereof toward the dumping side and adapted to overlie a car on saidcradle and form a cover therefor, and means for causing automatically asliding movement of said pivoted means relative to said cradle as thelatter approaches car receiving position.

29. In a car dumper, a car receiving cradle adapted to be turned todumping position, can clamping means, pivoted means associated with saidcradle'for sliding movement relative thereto and extending transverselythereof toward the dumping side and adapted to overlie a car on saidcradle and form a cover therefor, and means for automatically causing anupward sliding movement and an upward swinging movement of said pivotedmeans relative to the cradle as the latter approaches car receivingposition.

30. In a car dumper, a car receiving cradle adapted to be turned to cardumping position, a frame comprising a plurality of sectionsindependently mounted on said cradle for vertical movement relativethereto, hoods pivotally connected to said section and extendingtransversely of the cradle toward the dumping side thereof, and meansfor causing upward swinging movement of said hoods relative to saidframe sections and automatically effective as said cradle approaches carreceiving position.

31. In a car dumper, a car receiving cradle adapted to be turned to cardumping position, car clamping means, pivoted means associated with saidcradle for sliding movement relative thereto and extending transverselythereof toward the dumping side and adapted to overlie a car on saidcradle and form a cover therefor, and means associated with said pivotedmeans and said cradle for maintaining said pivoted means against outwardsliding movement relative to said cradle during the car dumpingoperation, said last named means being automatically renderedineffective while the cradle is in upright position and before itreaches car receiving position.

32. In a car dumper a cradle adapted to be tilted to dump a car thereon,car clamping means, a hinged hood adapted to retard the outflow ofmaterial from said car during the dumping operation, said clamping meansand said hood being movable vertically relative to said cradle, andmeans for automatically moving said clamping means and said hoodvertically as said cradle approaches the car receiving position.

ARTHUR. F. CASE. JOSEPH P. DOYLE.

